"I swear I didn't mean to," she told Ann Curry on the plaza this morning about clocking the Thor star in the face, joking, "He got too close."

Actually, Kristen says (believe it or not!) she never trained for battle and was completely out of her element while doing the intense stunt work on the set. Director Ruper Sanders just told her to take hold of the sword and go with it!

"It's funny, I thought we were going to do a whole load of choreography and fight-training rehearsal, but basically, at the end of the day, Rupert put a sword in my hand and said, 'Don't die,'" Kristen said.

"You don't want to watch Snow White suddenly become this skilled [warrior] — it's so much more from the heart," the actress added of how her inexperience brought more life to the character. "She really moves toward fear and doesn't back away from it, so it's really cool to watch her."